12 oz Dark chocolate / roughly broken up 1 can sweetened condensed milk 2 tablespoons butter pinch salt 1 cup chopped walnuts
Melt the chopped chocolate, condensed milk, butter, and salt in a heavy based pan on a low heat. Add the nuts to the melted chocolate and condensed milk and stir well to mix. Pour this mixture into a 9-inch square foil tray, smoothing the top. Let the fudge cool and then refrigerate until set. Cut into small pieces approximately 3/4 by 1 3/4 inches or cut 8 by 8 lines in the tin to give 64 pieces.